Translated from the Latin of Rufinus
19 Let no one, however, entertain the suspicion that we do not believe any history in Scripture to be real, because we suspect certain events related in it not to have taken place; or that no precepts of the law are to be taken literally, because we consider certain of them, in which either the nature or possibility of the case so requires, incapable of being observed; or that we do not believe those predictions which were written of the Saviour to have been fulfilled in a manner palpable to the senses; or that His commandments are not to be literally obeyed. We have therefore to state in answer, since we are manifestly so of opinion, that the truth of the history may and ought to be preserved in the majority of instances. For who can deny that Abraham was buried in the double cave at Hebron, as well as Isaac and Jacob, and each of their wives? Or who doubts that Shechem was given as a portion to Joseph? or that Jerusalem is the metropolis of Judea, on which the temple of God was built by Solomon?— and countless other statements. For the passages which hold good in their historical acceptation are much more numerous than those which contain a purely spiritual meaning. Then, again, who would not maintain that the command to “honour your father and your mother, that it may be well with you,” is sufficient of itself without any spiritual meaning, and necessary for those who observe it? Especially when Paul also has confirmed the command by repeating it in the same words. And what need is there to speak of the prohibitions, “You shall not commit adultery,” “You shall not steal,” “You shall not bear false witness,” and others of the same kind? And with respect to the precepts enjoined in the Gospels, no doubt can be entertained that very many of these are to be literally observed, as, e.g., when our Lord says, “But I say unto you, Swear not at all;” and when He says, “Whosoever looks upon a woman to lust after her, has committed adultery with her already in his heart;” the admonitions also which are found in the writings of the Apostle Paul, “Warn them that are unruly, comfort the feeble-minded, support the weak, be patient towards all men,” and very many others. And yet I have no doubt that an attentive reader will, in numerous instances, hesitate whether this or that history can be considered to be literally true or not; or whether this or that precept ought to be observed according to the letter or no. And therefore great pains and labour are to be employed, until every reader reverentially understand that he is dealing with divine and not human words inserted in the sacred books.
20. The understanding, therefore, of holy Scripture which we consider ought to be deservedly and consistently maintained, is of the following kind. A certain nation is declared by holy Scripture to have been chosen by God upon the earth, which nation has received several names: for sometimes the whole of it is termed Israel, and sometimes Jacob; and it was divided by Jeroboam son of Nebat into two portions; and the ten tribes which were formed under him were called Israel, while the two remaining ones (with which were united the tribe of Levi, and that which was descended from the royal race of David) was named Judah. Now the whole of the country possessed by that nation, which it had received from God, was called Judea, in which was situated the metropolis, Jerusalem; and it is called metropolis, being as it were the mother of many cities, the names of which you will frequently find mentioned here and there in the other books of Scripture, but which are collected together into one catalogue in the book of Joshua the son of Nun.
21. This, then, being the state of the case, the holy apostle desiring to elevate in some degree, and to raise our understanding above the earth, says in a certain place, “Behold Israel after the flesh;” by which he certainly means that there is another Israel which is not according to the flesh, but according to the Spirit. And again in another passage, “For they are not all Israelites who are of Israel.”
Source: De Principiis (New Advent)